Fighters from the Free Syrian Army run to avoid snipers on the frontline against the forces of Syria's President Bashar al-Assad in Jobar, Damascus(Reuters)

A moderate Syrian rebel leader has been killed in a bomb attack in southern Turkey, local media reports. Jamil Raadoun, a commander of Sukour al-Ghab, a militant group fighting under the umbrella banner of the Free Syrian Army (FSA), was severely injured in an explosion that hit his car in the city of Antakya, off the Syrian border.

He was rushed to a local hospital where he was later pronounced dead. The deadly blast was triggered by an explosive device hid underneath the vehicle, local media reported.

There was no immediate claim of responsibility for the attack on Raadoun, who had survived a similar attempt on his life in April. Islamist groups, including Islamic State (Isis) and the Nusra Front, have attacked moderate fighters in the past.

Syrian rebels often cross back and forth over Turkey's porous southern border with Syria, which stretches for more than 500 miles, with some border towns used as off-warzone bases.